The Journal of Contemporary Dental Practice

Register      Login

SEARCH WITHIN CONTENT

FIND ARTICLE

Volume / Issue

Online First

Archive
Related articles

VOLUME 22 , ISSUE 2 ( February, 2021 ) > List of Articles

ORIGINAL RESEARCH

Comparison of Canal Transportation in TruNatomy, ProTaper Gold, and Hyflex Electric Discharge Machining File Using Cone-beam Computed Tomography

Mukesh Kumar, Ajay Paliwal, Sai K Ganapathy, Neha Kumari, Ayush R Singh

Keywords : Canal transportation, Cone-beam computed tomography, Hyflex EDM, ProTaper Gold, TruNatomy

Citation Information : Kumar M, Paliwal A, Ganapathy SK, Kumari N, Singh AR. Comparison of Canal Transportation in TruNatomy, ProTaper Gold, and Hyflex Electric Discharge Machining File Using Cone-beam Computed Tomography. J Contemp Dent Pract 2021; 22 (2):117-121.

DOI: 10.5005/jp-journals-10024-2970

License: CC BY-NC 4.0

Published Online: 01-02-2021

Copyright Statement:  Copyright © 2021; Jaypee Brothers Medical Publishers (P) Ltd.


Abstract

Aim: This study was carried out to compare canal transportation in three new rotary file systems, namely TruNatomy, ProTaper Gold, and Hyflex Electric Discharge Machining file system, using cone-beam computed tomography. Materials and methods: The study was conducted on 105 extracted teeth consisting of 60 extracted mandibular first molars and 45 mandibular second premolars involving the mesiolingual canal of mandibular first molar and the root canal of second premolar. The teeth were randomly divided into three groups of 35 out of which each group consisted of 20 mandibular first molars and 15 mandibular second premolars. The TruNatomy rotary file was used in group I, ProTaper Gold was used in group II, and Hyflex Electric Discharge Machining was used in group III. Cone-beam computed tomography scan images were obtained both before and after instrumentation. Changes caused by preparation in the coronal, middle, and apical thirds were determined on cone-beam computed tomography scans and analyzed using the Kruskal–Wallis test at p ≤ 0.05 level of significance. Results: TruNatomy showed least amount of canal transportation as compared with other two file systems at all the three levels of canals. ProTaper Gold showed maximum amount of canal transportation as compared with other two file systems at all the three levels of canals. The Hyflex EDM rotary file system showed transportation, which was more than the TruNatomy file system while it was less than that of ProTaper Gold. The difference was statically significant at the middle one-third level (p = 0.03) and at the coronal level (p = 0.02). Conclusion: The TruNatomy system has least amount of canal transportation as compared with ProTaper Gold and Hyflex EDM system. With potential to preserve tooth structure, this file has an added advantage over other rotary file systems. Clinical significance: The TruNatomy file system has been recently introduced with good cyclic fatigue resistance. It is necessary to evaluate the root canal transportation caused by the TruNatomy file.


PDF Share
  1. Peters OA. Current challenges and concepts in the preparation of root canal systems: a review. J Endod 2004;30(8):559–667. DOI: 10.1097/01.DON.0000129039.59003.9D.
  2. Wei Z, Cui Z, Yan P, et al. A comparison of the shaping ability of three nickel-titanium rotary instruments: a micro-computed tomography study via a contrast radiopaque technique in vitro. BMC Oral Health 2017;17(1):39. DOI: 10.1186/s12903-016-0326-5.
  3. Pereira ÉS, Viana AC, Buono VT, et al. Behavior of nickel-titanium instruments manufactured with different thermal treatments. J Endod 2015;41(1):67–71. DOI: 10.1016/j.joen.2014.06.005.
  4. Alrahabi M. Comparative study of root-canal shaping with stainless steel and rotary NiTi files performed by preclinical dental students. Technol Health Care 2015;23(3):257–265. DOI: 10.3233/THC-150895.
  5. Hülsmann M, Peters OA, Dummer PMH. Mechanical preparation of root canals: shaping goals, techniques and means. Endod Topics 2005;10(1):30–76. DOI: 10.1111/j.1601-1546.2005.00152.x.
  6. Ye J, Gao Y. Metallurgical characterization of M-Wire nickel-titanium shape memory alloy used for endodontic rotary instruments during low-cycle fatigue. J Endod 2012;38(1):105–107. DOI: 10.1016/j.joen.2011.09.028.
  7. Gao Y, Gutmann JL, Wilkinson K, et al. Evaluation of the impact of raw materials on the fatigue and mechanical properties of ProFile Vortex rotary instruments. J Endod 2012;38(3):398–401. DOI: 10.1016/j.joen.2011.11.004.
  8. Silva EJNL, Vieira VCG, Tameirão MDN, et al. Quantitative transportation assessment in curved canals prepared with an off-centered rectangular design system. Braz Oral Res 2016;30(1):e43. DOI: 10.1590/1807-3107BOR-2016.vol30.0043.
  9. Ruddle CJ, Machtou P, West JD. The shaping movement: fifth-generation technology. Dent Today 2013;32(4):94, 96-9.
  10. Zhao D, Shen Y, Peng B, et al. Micro-computed tomography evaluation of the preparation of mesiobuccal root canals in maxillary first molars with Hyflex CM, Twisted files, and K3 instruments. J Endod 2013;39(3):385–388. DOI: 10.1016/j.joen.2012.11.030.
  11. Pirani C, Iacono F, Generali L, et al. HyFlex EDM: superficial features, metallurgical analysis and fatigue resistance of innovative electro discharge machined NiTi rotary instruments. Int Endod J 2016;49(5):483–493. DOI: 10.1111/iej.12470.
  12. Testarelli L, Plotino G, Al-Sudani D, et al. Bending properties of a new nickel-titanium alloy with a lower percent by weight of nickel. J Endod 2011;37(9):1293–1295. DOI: 10.1016/j.joen.2011.05.023.
  13. Kaval ME, Capar ID, Ertas H. Evaluation of the cyclic fatigue and torsional resistance of novel nickel-titanium rotary files with various alloy properties. J Endod 2016;42(12):1840–1843. DOI: 10.1016/j.joen.2016.07.015.
  14. Gambill JM, Alder M, Rio CE. Comparison of nickel-titanium and stainless steel hand-file instrumentation using computed tomography. J Endod 1996;22(7):369–375. DOI: 10.1016/S0099-2399(96)80221-4.
  15. Elnaghy AM, Elsaka SE, Mandorah AO. In vitro comparison of cyclic fatigue resistance of TruNatomy in single and double curvature canals compared with different nickel-titanium rotary instruments. BMC Oral Health 2020;20(1):38. DOI: 10.1186/s12903-020-1027-7.
  16. Riyahi AM, Bashiri A, Alshahrani K, et al. Cyclic fatigue comparison of TruNatomy, twisted file, and ProTaper next rotary systems. Int J Dent 2020;2020:3190938. DOI: 10.1155/2020/3190938.
  17. Vyver PJ, Vorster M, Peters OA. Minimally invasive endodontics using a new single-file rotary system. Int Dent Afr 2019;9(4):6–20.
  18. Turkistani AK, Gomaa MM, Shafei LA, et al. Shaping ability of HyFlex EDM and ProTaper next rotary instruments in curved root canals: a micro-CT study. J Contemp Dent Pract 2019;20(6):680–685. DOI: 10.5005/jp-journals-10024-2579.
  19. Gagliardi J, Versiani MA, Neto MD, et al. Evaluation of the shaping characteristics of ProTaper gold, ProTaper NEXT, and ProTaper universal in curved canals. J Endod 2015;41(10):1718–1724. DOI: 10.1016/j.joen.2015.07.009.
  20. Al-Sudani D, Grande NM, Plotino G, et al. Cyclic fatigue of nickel-titanium rotary instruments in a double (S-shaped) simulated curvature. J Endod 2012;38(7):987–989. DOI: 10.1016/j.joen.2012.03.025.
  21. Paqué F, Barbakow F, Peters OA. Root canal preparation with Endo-Eze AET: changes in root canal shape assessed by micro-computed tomography. Int Endod J 2005;38(7):456–464. DOI: 10.1111/j.1365-2591.2005.00968.x.
PDF Share
PDF Share

© Jaypee Brothers Medical Publishers (P) LTD.